Mechanical time-fuse



- H. mm.

MECHANICAL TIME FUSE.

APPLICATION FILED NOV. l9,1920.

1,372,574, Patented Mar. 22, 1.

' I zsnaus H. THIEL.

MECHANICAL TIME FUSE.

APPLICATION HLED NOV. 19. 1920.

1,372,574. Patented Mar. 22, 1921,

2 SHEETS-SHEET 2.

r cm

HEINRICH-rarer, or RUHLA, GERMANY, s'sIGNoR TO FRIED. .KRUPP AKTIENf-IGESELLSCHAFQOF ESSEN-ON-THE-RUHR,GERMANY.

MECHANICAL TIME-FUSE.

Application filed. November 19, 1920. Serial No. 425,101.

To all whom it may concern:

Be it known that I, HEINRICH THmL,

residing at Ruhla, Germany, a citizen of the German Republic, haveinvented a certain new and useful Improvement in Mechanical Time-Fuses,of which the following is a specification.

My invention relates to mechanical time fuses, in which the percussionpin which is rotatable on its axis is supported in inoperative positionby means of a cam attached to itand a fixed support in contact with saidcam. In time fuses of this type used heretofore usually a releasingshaft journaled at 1 both ends was interposed between the percussion pinand the arm which releases the percussion pin, when operated by the timeelement of the fuse. This arrangement has the disadvantage that thisreleasing shaft is easily bent owing to the enormous forces which comeinto, action during the firing of the projectile resulting in thejamming of the shaft in its bearings so that this releasing shaft doesnot properly function when the time comes to bring the percussion pininto action. The subject matter of the present invention refers to amechanical time fuse of this type in which this disadvantage is avoidedand in which the releasing mechanism is materially simplified.

In the accompanying drawings, an example of my invention is illustrated.In these drawings:

Figure 1 is a transverse section of the elements in question of the timefuse on the line AB in Fig. 2;

Fig. 2 shows the elements of this mechanism in longitudinal, verticalsection;

Fig. 3 shows a transverse section similar to that shown in Fig. 1 withthe elements in the position after the percussion pin has operated.

Fig. 4 shows a rear view of the lower portion of the fuse shown in Fig.2, and Fig. 5 shows a similar view of the elements shown in Fig. 4 afterthe percussion pin has operated.

The percussion pin 1, rotatable on its lon- 'gitudinal axis as shown andactuated by spring 2, is provided with a cam 3 provided with an inclinedface 4 which rests upon the cone-shaped top 7 of a pin. 5 rigidlysupported on the casing plate 6 of the fuse.

Specification of Letters Patent. I Patent d M 22 1921' (STATE PArNr orY-Ei The upper portion of percussion pin is I squared as shown at 8 andthis end of the pin is located in the releasing arm 9 such that it canlongitudinally slide therein but lspreventedfrom rotation except throughthe rotation ofarm 9. Arm 9 may be held 1n the position in which cam 3rests upon pm 5 by any well known timing mechanism employed in suchdevices so that percussion pin 1 is prevented from rotation until thetime element brings aboutthe release of arm 9. In order to'secure thetime fuse against premature action, for instance during the transport,of the projectile, percussion pin 1 is secured against longitudinalmotion toward the percussion'cap by means of a look f 11, rotatable onpin 12 and actuated to release the pin by means of centrifugal force.This,

locking element 11 engages the percussion pin 1 underneath a collar 15provided on the pin. The contour of the locking element 11 ment, arm 9,which is simultaneously under the influence of the centrifugal force andof spring 2 swings outwardly, aided by the inclined face 4 of cam 3 sothat the percussion pin 1 rotates wherebycam'3 slides ofi. bolt 5whereupon the pinis free to strike the percussion cap (not shown) withits point 17.

I claim- 1. In a mechanical time fuse, a percussion pin adapted torotate on its axis and to'slide in the direction thereof, a cam on saidpin, a fixed support contacting'with and thereby supporting said pin, anoperating arm idirectly connected to said pin, said operating armadapted to rotate said pin to release 1 said cam from itssupport, theconnection between said pin andsaid arm permitting. said pin to moverelatlvely to said arm in a longitudinal direction after the release hasoccurred.

. j M 2. In a mechanical time fuse, a percussion an operating armdirectly connected'to said pin and adapted to rotate it to release saidcam from its support, the connection betvyeen said pin and saidarmpermitting said pin to move'relatlvely to said arm'inv a lon- 10gitudinal direction after the release has occurred.

HEINRICH THIEL. In presence of- EMIL DijRER,

AUGUST HARTMANN.

